コード例 #1
0
ファイル: protocol_v2.go プロジェクト: absolute8511/nsq
func (p *protocolV2) RDY(client *nsqd.ClientV2, params [][]byte) ([]byte, error) {
	state := atomic.LoadInt32(&client.State)

	if state == stateClosing {
		// just ignore ready changes on a closing channel
		nsqd.NsqLogger().Logf(
			"PROTOCOL(V2): [%s] ignoring RDY after CLS in state ClientStateV2Closing",
			client)
		return nil, nil
	}

	if state != stateSubscribed {
		nsqd.NsqLogger().LogWarningf("[%s] command in wrong state: %v", client, state)
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "cannot RDY in current state")
	}

	count := int64(1)
	if len(params) > 1 {
		b10, err := protocol.ByteToBase10(params[1])
		if err != nil {
			return nil, protocol.NewFatalClientErr(err, E_INVALID,
				fmt.Sprintf("RDY could not parse count %s", params[1]))
		}
		count = int64(b10)
	}

	if count < 0 || count > p.ctx.getOpts().MaxRdyCount {
		// this needs to be a fatal error otherwise clients would have
		// inconsistent state
		return nil, protocol.NewFatalClientErr(nil, E_INVALID,
			fmt.Sprintf("RDY count %d out of range 0-%d", count, p.ctx.getOpts().MaxRdyCount))
	}

	client.SetReadyCount(count)

	return nil, nil
}